US PATENT SUBCLASS 380 / 8
.~ By signal having discrete step amplitude variation

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

6  DF  ELECTRIC SIGNAL MASKING {2}
8.~ By signal having discrete step amplitude variation

DEFINITION

Classification: 380/8

By signal having discrete step amplitude variation:

(under subclass 6) Subject matter wherein the amplitude of the masking signal varies in discrete steps.